HP HPE7-A08 Practice Test 38

Question 370

An implementation change is planned for: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. Which preventive control BEST reduces unnecessary outage and security risk?

Document matched peer configuration before connecting extra members
Include per-VLAN uplink tests in deployment acceptance
Test both failure channels independently during commissioning
Use a standardized OSPF peer template with staged adjacency checks

Explanation

Correct Answer

Include per-VLAN uplink tests in deployment acceptance. This safeguard is appropriate before the change to check both ends for an allowed VLAN 30 trunk mismatch; it reduces exposure to the mistake of assuming the uplink is healthy for all VLANs because VLAN 10 works.

Incorrect Answers

This prevention choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to include per-VLAN uplink tests in deployment acceptance.

This prevention choice fits a different situation: A VSX pair loses downstream LAG forwarding after an ISL interruption. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to include per-VLAN uplink tests in deployment acceptance.

This prevention choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to include per-VLAN uplink tests in deployment acceptance.

Question 371

A first repair attempt for this situation failed: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. The review found the mistaken approach of assuming the uplink is healthy for all VLANs because VLAN 10 works. Which targeted recovery action BEST restores the intended design?

Add only VLAN 30 to the relevant allowed lists and retest
Correct address assignment or DHCP scope and verify the local route
Correct the narrow rule or object reference without opening the entire network
Align the OSPF peer parameters and confirm convergence

Explanation

Correct Answer

Add only VLAN 30 to the relevant allowed lists and retest. This addresses the observed risk rather than hiding its symptoms. Confirm the repair when the target VLAN appears in effective trunk membership and test packets pass.

Incorrect Answers

This remediation choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to add only VLAN 30 to the relevant allowed lists and retest.

This remediation choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to add only VLAN 30 to the relevant allowed lists and retest.

This remediation choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to add only VLAN 30 to the relevant allowed lists and retest.

Question 372

An HPE Aruba Networking engineer faces this wired-network scenario: An access port shows administratively down even with a working patch cable. Which implementation action BEST addresses the requirement?

Identify the host mask and gateway mismatch before changing switch routing
Identify administrative shutdown before suspecting optic or STP behavior
Identify mismatched area, timer, authentication or network settings
Identify likely optic or fiber-layer faults using counters and optical diagnostics

Explanation

Correct Answer

Administrative interface state is distinct from physical link detection. The targeted implementation is to identify administrative shutdown before suspecting optic or STP behavior. The deployment succeeds when the port state changes when deliberately enabled and passes traffic.

Incorrect Answers

This implementation choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify administrative shutdown before suspecting optic or STP behavior.

This implementation choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify administrative shutdown before suspecting optic or STP behavior.

This implementation choice fits a different situation: A fiber connection logs high FCS errors and periodically loses carrier. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify administrative shutdown before suspecting optic or STP behavior.

Question 373

After implementing the approved change — Identify administrative shutdown before suspecting optic or STP behavior — for this scenario: An access port shows administratively down even with a working patch cable. Which observed result BEST verifies the outcome?

VSX peer health diagnoses the safe failover state under the observed fault
Correcting the endpoint subnet restores gateway reachability
A tested physical replacement eliminates link errors at the same load
The port state changes when deliberately enabled and passes traffic

Explanation

Correct Answer

The port state changes when deliberately enabled and passes traffic. This is the observable acceptance evidence for the decision to identify administrative shutdown before suspecting optic or STP behavior. It demonstrates the principle that administrative interface state is distinct from physical link detection.

Incorrect Answers

This verification choice fits a different situation: A VSX pair loses downstream LAG forwarding after an ISL interruption. It does not resolve the stated failure mode. For this case, the decisive verification choice is to the port state changes when deliberately enabled and passes traffic.

This verification choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive verification choice is to the port state changes when deliberately enabled and passes traffic.

This verification choice fits a different situation: A fiber connection logs high FCS errors and periodically loses carrier. It does not resolve the stated failure mode. For this case, the decisive verification choice is to the port state changes when deliberately enabled and passes traffic.

Question 374

An HPE Aruba Networking design review examines: An access port shows administratively down even with a working patch cable. Which technical principle BEST explains the required approach?

An operational LAG depends on compatible partner identity and settings
Administrative interface state is distinct from physical link detection
Policy drops can mimic physical or routing outages for a specific flow
Endpoint addressing must match its VLAN and gateway network

Explanation

Correct Answer

Administrative interface state is distinct from physical link detection. The case therefore calls for this specifically controlled action: identify administrative shutdown before suspecting optic or STP behavior. The acceptance evidence is that the port state changes when deliberately enabled and passes traffic.

Incorrect Answers

This principle choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive principle choice is to administrative interface state is distinct from physical link detection.

This principle choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive principle choice is to administrative interface state is distinct from physical link detection.

This principle choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive principle choice is to administrative interface state is distinct from physical link detection.

Question 375

A risk review for the following wired-network case asks what should be avoided: An access port shows administratively down even with a working patch cable. Which assumption creates the GREATEST implementation risk?

Assuming an ISL outage can never affect VSX multi-chassis forwarding
Assuming the uplink is healthy for all VLANs because VLAN 10 works
Declaring OSPF healthy because ping to the neighbor IP succeeds
Replacing a good cable to fix an interface explicitly shutdown

Explanation

Correct Answer

Replacing a good cable to fix an interface explicitly shutdown. That shortcut fails because administrative interface state is distinct from physical link detection. Instead, the appropriate approach is to identify administrative shutdown before suspecting optic or STP behavior.

Incorrect Answers

This misconception choice fits a different situation: A VSX pair loses downstream LAG forwarding after an ISL interruption. It does not resolve the stated failure mode. For this case, the decisive misconception choice is to replacing a good cable to fix an interface explicitly shutdown.

This misconception choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive misconception choice is to replacing a good cable to fix an interface explicitly shutdown.

This misconception choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive misconception choice is to replacing a good cable to fix an interface explicitly shutdown.

Question 376

Before changing switch configuration, an engineer investigates: An access port shows administratively down even with a working patch cable. Which FIRST check is most useful for isolating the cause?

Inspect OSPF interface flags, neighbor messages and authentication
Inspect admin state, link state and recent configuration changes
Check VSX status, keepalive reachability and ISL counters
Compare host IP settings, connected VLAN and gateway SVI

Explanation

Correct Answer

Inspect admin state, link state and recent configuration changes. This first check isolates the relevant mechanism without an untested configuration change. It tests the rule that administrative interface state is distinct from physical link detection.

Incorrect Answers

This diagnostic choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect admin state, link state and recent configuration changes.

This diagnostic choice fits a different situation: A VSX pair loses downstream LAG forwarding after an ISL interruption. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect admin state, link state and recent configuration changes.

This diagnostic choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect admin state, link state and recent configuration changes.

Question 377

An implementation change is planned for: An access port shows administratively down even with a working patch cable. Which preventive control BEST reduces unnecessary outage and security risk?

Include DHCP lease renewal in every routed VLAN cutover test
Test allow and deny flows under representative identities
Capture endpoint and gateway settings before escalation
Require an explicit approval to enable a reserved access interface

Explanation

Correct Answer

Require an explicit approval to enable a reserved access interface. This safeguard is appropriate before the change to identify administrative shutdown before suspecting optic or STP behavior; it reduces exposure to the mistake of replacing a good cable to fix an interface explicitly shutdown.

Incorrect Answers

This prevention choice fits a different situation: A branch receives no DHCP leases following a routed VLAN migration. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to require an explicit approval to enable a reserved access interface.

This prevention choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to require an explicit approval to enable a reserved access interface.

This prevention choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to require an explicit approval to enable a reserved access interface.

Question 378

A first repair attempt for this situation failed: An access port shows administratively down even with a working patch cable. The review found the mistaken approach of replacing a good cable to fix an interface explicitly shutdown. Which targeted recovery action BEST restores the intended design?

Correct address assignment or DHCP scope and verify the local route
Correct the narrow rule or object reference without opening the entire network
Restore the intended admin state and validate the port profile
Replace the defective optic or patch and confirm error counters stabilize

Explanation

Correct Answer

Restore the intended admin state and validate the port profile. This addresses the observed risk rather than hiding its symptoms. Confirm the repair when the port state changes when deliberately enabled and passes traffic.

Incorrect Answers

This remediation choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to restore the intended admin state and validate the port profile.

This remediation choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to restore the intended admin state and validate the port profile.

This remediation choice fits a different situation: A fiber connection logs high FCS errors and periodically loses carrier. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to restore the intended admin state and validate the port profile.

Question 379

An HPE Aruba Networking engineer faces this wired-network scenario: A fiber connection logs high FCS errors and periodically loses carrier. Which implementation action BEST addresses the requirement?

Check both ends for an allowed VLAN 30 trunk mismatch
Identify administrative shutdown before suspecting optic or STP behavior
Identify a LACP peer or member consistency issue in the aggregate
Identify likely optic or fiber-layer faults using counters and optical diagnostics

Explanation

Correct Answer

CRC and physical alarms provide stronger link-health evidence than a lit LED. The targeted implementation is to identify likely optic or fiber-layer faults using counters and optical diagnostics. The deployment succeeds when a tested physical replacement eliminates link errors at the same load.

Incorrect Answers

This implementation choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify likely optic or fiber-layer faults using counters and optical diagnostics.

This implementation choice fits a different situation: An access port shows administratively down even with a working patch cable. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify likely optic or fiber-layer faults using counters and optical diagnostics.

This implementation choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify likely optic or fiber-layer faults using counters and optical diagnostics.

Question 380

After implementing the approved change — Identify likely optic or fiber-layer faults using counters and optical diagnostics — for this scenario: A fiber connection logs high FCS errors and periodically loses carrier. Which observed result BEST verifies the outcome?

OSPF neighbors reach the intended state and routes appear after repair
A tested physical replacement eliminates link errors at the same load
Allowed traffic continues and the denied traffic matches the documented policy
The matched members become active after peer settings are aligned

Explanation

Correct Answer

A tested physical replacement eliminates link errors at the same load. This is the observable acceptance evidence for the decision to identify likely optic or fiber-layer faults using counters and optical diagnostics. It demonstrates the principle that cRC and physical alarms provide stronger link-health evidence than a lit LED.

Incorrect Answers

This verification choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive verification choice is to a tested physical replacement eliminates link errors at the same load.

This verification choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive verification choice is to a tested physical replacement eliminates link errors at the same load.

This verification choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive verification choice is to a tested physical replacement eliminates link errors at the same load.

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Pass Your HP HPE7-A08 Exam Easy!

Question 370

Explanation

Correct Answer

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Question 371

Explanation

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Question 372

Explanation

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Question 373

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Question 374

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Question 375

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Question 376

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Question 377

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Question 378

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Question 379

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Question 380

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HPE Network Switching Professional (HPE7-A08) Practice Tests